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Planning application

20 Air Street London W1B 5AN

Granted Westminster 26/00013/FULL Full Planning Permission Application

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Installation of new plant on the main roof of the building.

As published by the council, reference 26/00013/FULL

Application record

Reference
26/00013/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
5 Jan 2026
Validated
23 Feb 2026
Decided
10 Apr 2026
Ward
West End
Decision by
Delegated Decision
Postcode
W1B 5AN

Site history

Applications at this address on the Westminster register

This site has had 5 applications since 2026: 3 approved, 0 refused.

  • 26/06386/FULL Awaiting decision

    20 Air Street London W1B 5AN

    Installation of a ventilation louvre within an existing third-floor window opening and associated mechanical ventilation equipment. (Linked with 26/06387/LBC)

    Submitted 17 Sep 2026 Full applications
  • 26/06387/LBC Awaiting decision

    20 Air Street London W1B 5AN

    Installation of a ventilation louvre within an existing third-floor window opening and associated mechanical ventilation equipment; internal alterations to reconfigure the Level 3 lounge, including new partitions, bar fit-out and associated building services. (Linked with 26/06386/FULL)

    Submitted 17 Sep 2026 Heritage and listed buildings
  • 26/00274/LBC Granted

    20 Air Street London W1B 5AN

    Installation of two rooftop condenser units.

    Decided 17 Apr 2026 Heritage and listed buildings
  • 26/00273/FULL Granted

    20 Air Street London W1B 5AN

    Installation of two rooftop condenser units.

    Decided 17 Apr 2026 Full applications

Timeline

Dates from the published record

  1. 5 Jan 2026

    Received by Westminster

  2. 23 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 10 Apr 2026

    Decision issued: Application Permitted

  4. 20 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Left City Ltd. Agent, registered in Glasgow

Active · incorporated 2012 · Glasgow

46 applications on PlanIndex · across 8 councils · 98% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

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Documents

Plans, drawings, consultee responses and the officer's report

23 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Westminster granted permission on 10 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • First Floor 17 Air Street London W1B 5AF

    26/06722/AD7 Submitted 1 Oct 2026 50 yards away

    89% historically approved · decision due ~26 Nov

    Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.

    Decided
  • Ground Floor 17 Air Street London W1B 5AF

    26/05138/FULL Submitted 30 Jul 2026 50 yards away

    88% historically approved · decision due ~30 Sep

    Installation of a new inward-opening painted timber-framed glazed entrance door within the existing ground-floor shopfront.

    Decided Full applications Windows or glazing
  • Ground Floor 17 Air Street London W1B 5AF

    26/04977/ADV Submitted 24 Jul 2026 50 yards away

    82% historically approved · decision due ~29 Oct

    Display of externally illuminated projecting sign measuring 0.8m X 0.7m and externally illuminated fascia sign measuring 4.7m X 0.7m

    Withdrawn Advertising 10 docs
  • The Glass Blower 42 Glasshouse Street London W1B 5DW

    26/03426/ADV Submitted 26 May 2026 50 yards away

    82% historically approved · decision due ~21 Jul

    Display of two externally illuminated hanging signs each measuring 1.20m x 0.90; two internally illuminated menu cases each measuring 0.50m x 0.38m; two house name letters each measuring 1.80m x 0.56m; two door plaque each measuring 0.25m x 0.25m; two sets of sign written letters each measuring 0.78m x 0.10m; 1x set of individual house number measuring 0.76m x 0.10m; two amenity boards each measuring 1.00m x 0.60m; and two chalkboards each measuring 1.00m x 0.60m.

    Awaiting decision Advertising 4 docs
    Several homes
  • The Glass Blower 42 Glasshouse Street London W1B 5DW

    26/03122/FULL Submitted 12 May 2026 50 yards away

    88% historically approved · decision due ~7 Jul

    Painting of facade, windows and doors.

    Awaiting decision Full applications Windows or glazing 6 docs
  • 20 Air Street London W1B 5AN

    26/00274/LBC Submitted 19 Jan 2026 50 yards away

    Installation of two rooftop condenser units.

    Granted Heritage and listed buildings 19 docs

In Westminster

  • 26/07508/FULL Awaiting decision

    Buckingham Palace The Mall London SW1A 1AA

    Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

    Received 4 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07470/FULL Awaiting decision

    12 Queen Anne's Gate London SW1H 9AA

    Excavation of single-storey basement, internal reconfiguration, installation of modern services and associated works. (Linked with 26/07471/LBC)

    Received 3 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07466/FULL Awaiting decision

    65 Albion Gate Albion Street W2 2LA

    Replacement of first-floor front elevation windows and balcony door with double-glazed steel-framed units.

    Received 3 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07460/FULL Awaiting decision

    1 Hanover Square London W1S 1HA

    Installation of new public art sculptures and seating; hard and soft landscaping; installation of an area of raised terrace decking on St George Street measuring 43m x 2.6m for the placing of tables, chairs and banquette benches in connection with restaurant use; and associated external alterations and enabling works.

    Received 3 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07451/FULL Awaiting decision

    Flat 1 31 South Audley Street London W1K 2PG

    Replacement of windows, Installation of an external condenser to the rear elevation including Internal refurbishment. (linked with 26/07452/LBC)

    Received 2 Nov, published by the council 4 Nov 2026 Full applications